Improvement in millstone-drivers



J. C. DANE. lVIillstone-Drival'.A

No. 212,199. Patented Feb. 11, 1879.

UNITED STATES PATENT OFFICE.

JOSEPH C. DANE, OF LA GROSSE, \VISOONSIN.

IMPROVEMENT IN MILLSTONE-DRIVERS.

Specification forming part of Letters Patent No. 212,199, dated February11, 1879 application filed December 17, 1878.

To all whom it may concern;

Be it known that I, JOSEPH O. DANE, of La Crosse, in the county of LaCrosse and State of Wisconsin, have invented certain new and usefulImprovements in Mill-Burr Drivers and I do hereby declare that thefollowing is a full, clear, and exact description of the inven- ,tion,which will enable others skilled in the art to which it appertains tomake and use the same, reference beinghad to the accompanying drawings,and to the letters of reference marked thereon, which form apart of thisspecication.

The nature of my invention consists in the construction and arrangementof a millstonedriver, as will be hereinafter more fully set forth.'

In the annexed drawings, which fully illustrate my invention, Figure lis a plan view of my millstone-driver. Figs. 2 and 3 are side viewsthereof. Figs. 4 and 5 are vertical sections on the lines a: and y y,respectively, of Fig. 1. Fig. 6 is a bottom view of the bail, and Fig. 7is a bottom view of the driver.

A represents the spindle, made of the usual form, and provided with thecarrier-pin a, which is passed through it near the upper end, and uponwhich the driver B rests, said driver having a notch or recess, b,across the under edge on each side to iit over said pin. By this meansthe driver is carried around with the spindle as the same revolves.

The driver B is provided with jaws el d on opposite sides, which laponto each arm ofthe bail C, said bail being' of proper form to it theeye ot' the burr or stone. The bail C is provided with a balance-pin orcock-head, h, which is passed down into an opening in the upper end ofthe spindle to the centerof the carrier-pin a. The end of the pin l1. ispointed., and rests in a recess in the carrier-pin, as shown at i inFigs. 4 and 5, thus making the point of suspension and line of drive inthe same plane.

The jaws d of the driver B are beveled off` at w x, above and below theline of drive, for the purpose ot' allowing the bail to rock in the jawswithout friction. i

In order to keep the driver B level as it rests on the carrier-pin a,there are two pins, m m, inserted in the under side ofthe bail, andprojecting down to and nearly touching the driver, thereby holding itina level position. By these means I obtain an easy rocking motion on allpoints of the compass, giving au easy adjustment to the runner, so thatit will present an even face to the bed-stone at all times, even whenthe spindle gets out of tram.

On the bail C is cast a hood, D, to protect the several parts from beingilled up with the grain or substance that is being ground.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The pins m m, secured in the bail G, in combination with the driverB, for the purposes specified.

2. The pins m m and bail C, in combination with the balance-pin a anddriver B, substantially as and for the purpose set forth.

In testimony that I claimthe foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

JOSEPH O. DANE.

Witnesses WILLIAM HULL, ALEX. W. THORNELY.

